DC power supply distribution unit DCPD10B, installed in 19" cabinet and connected between - 48 V DC power supply and equipment, is a distribution unit and surge protection equipment, providing multipath power output. It is suitable to indoor low-voltage DC power distribution system for protection of equipment from surge and transient over-voltage caused by outside environment (such as lightning, EMI, switching effects of the system) or internal environment (power on and off, startup or shut off of inductance and capacitance loads, etc.)